/*******************************************************************************
 * Copyright 2017 Bstek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package com.bstek.urule.runtime.rete;

import java.util.List;
import java.util.Map;

/**
 * @author Jacky.gao
 * @since 2015年1月8日
 */
public class OrActivity extends JoinActivity {
    private boolean pass;

    public List<FactTracker> enter(EvaluationContext context, Object obj, FactTracker tracker, Map<String, Object> variableMap) {
        if (pass && variableMap.size() == 0) {
            return null;
        }
        context.setPrevActivity(this);
        pass = true;
        return visitPahs(context, obj, tracker, variableMap);
    }

    @Override
    public boolean orNodeIsPassed() {
        return pass;
    }

    @Override
    public void reset() {
        pass = false;
    }
}
